you will have to re download them to your PS3 if they are not on there. you can purchase them off of the MediaGo PC software program under games section it allows you to buy PSP games even if your not in the Europe or UK region. Which was where these GTA games for digital download were downloadable, they were not in the NA store. but vice city stories is only $20.00 anyway good buy for a PSP GTA that supports AD hoc multi-player.

Killzone Liberation does work on the Vita. I downloaded it when PSN went down. Initially it was sitting on my PS3 hard drive. Tried to install it after I got my Vita and the XMB had a message that the game had to be re-downloaded. Went over to my download history and downloaded it. Installed it on my Vita and have been really enjoying this game.

I'm pretty sure Phantasy Star Portable 1 + 2 used to be on the PS Store, and are gone now...? As well as DJMax Fever and Hottunes? Are they removing some PSP games from the PS Store? I'm sure there's more, but those are the ones I noticed.

I just recently found out about VC2 being playable. Been playing it on my vita the last few days. I had no idea Peace Walker was even available on the store. But I have the disc version so that's a no go for me. Same for Guilty Gear :(.